Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
  • C08G73/02—Polyamines
  • C08G73/0246—Polyamines containing other atoms than carbon, hydrogen, nitrogen or oxygen in the main chain
  • C08G73/0253—Polyamines containing sulfur in the main chain
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
  • C08G69/48—Polymers modified by chemical after-treatment
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
  • C08G73/02—Polyamines
  • C08G73/0206—Polyalkylene(poly)amines
  • C08G73/0213—Preparatory process
  • C08G73/022—Preparatory process from polyamines and epihalohydrins
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/20—Macromolecular organic compounds
  • D21H17/33—Synthetic macromolecular compounds
  • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen

Definitions

• the present invention relates to nitrogen-containing, crosslinkable polymeric compounds, their preparation and their use as auxiliaries in papermaking.
• water-soluble, curable resins are obtained by reacting epichlorohydrin with ammonia and / or polyamines.
• the object of the present invention was to produce water-soluble, storage-stable compounds which can be crosslinked in the neutral or alkaline pH range and which contain no or only very small amounts of organically bound halogen. A gradual or complete replacement of epihalohydrin or dihalohydrin should be achieved by using suitable halogen-free crosslinkers.
• the task was also to achieve wet strengths on paper that correspond to the commercially available polyamine-epihalohydrin resins.
• the compounds A1), A2) and A3) are preferred.
• the preferred molar ratio of the amines A 3 ⁇ ) to dicarboxylic acids A3 ⁇ ) is 0.8 to 1.4: 1.
• R16 are C1-C9-alkyl, cyclohexyl or optionally substituted by C1-C4-alkyl, C1-C5-alkoxy or hydroxy-substituted phenyl or benzyl.
• the polyamide amines Depending on the molar ratio A3 ⁇ : A3 ⁇ , the polyamide amines contain amino or carboxyl end groups.
• the polymers contain amide structures corresponding to diamines II.
• the crosslinkable compounds have a solids content of 5 to 30% by weight, preferably 10 to 25% by weight, a viscosity of 10 to 600 mPa.s, preferably 15 to 500 mPa.s at 25 ° C. Their molecular weight is approximately 1500 to 250,000, preferably 2000 to 200,000. (Weight average)
• reaction products according to the invention are preferably produced in an aqueous medium.
• polar solvents such as methanol, ethanol, isopropanol, tert-butanol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, glycerin, dimethylformamide, ethyl acetate or preferably their mixtures with water can also be used.
• the reaction of the starting components A and B is carried out by treating the aqueous or aqueous-organic about 10 to 60% solutions or emulsions of the two components at a temperature of 20 to 95 ° C, preferably 40 to 85 ° C, until one Sample of the reaction mixture in the form of a 15% aqueous or aqueous-organic solution or emulsion at 25 ° C has a viscosity of 15 to 300 mPa.s, preferably 20 to 200 mPa.s.
• Acids are then added to the mixture, which becomes more viscous, in order to end the action and to stabilize the self-crosslinking products, so that the pH is between 1 and 6, preferably 1.5 and 5.5.
• Acid derivatives include acid-reacting derivatives of the abovementioned acids, in particular anhydrides and acid salts, such as e.g. Alkali hydrogen sulfates to understand.
• the solids content of the products is then adjusted to the desired content by dilution with water and / or solvent.
• Diethylene triamine triethylene tetramine, tetraethylene pentamine, pentaethylene hexamine, hexaethylene heptamine, dipropylenetriamine, methyl bis (3-aminopropyl) amine, dihexamethylene triamine or mixtures thereof or mixtures thereof with 50 mol% of a diamine of the formula (II), preferably ethylenediamine.
• Preferred dicarboxylic acids (A3 ⁇ ) are:
• Preferred compound (A3 ⁇ ) is ⁇ -caprolactam.
• Aminocarboxylic acids such as those in lactams or their lactams, as described, for example, in German Offenlegungsschrift 2 925 567.
• Preferred 1,2-alkyleneimine (A5) is ethyleneimine.
• Preferred examples of 2,3-epoxypropyl sulfonates or 2-hydroxypropyl-1,3-bissulfonic acid esters (B) are:
• the paper is equipped with the polymers according to the invention in a manner known per se at pH values from 5 to 9.
• the crosslinkable compounds are preferably added in bulk in the form of aqueous solutions or emulsions to the aqueous suspension of the paper stock; this is then processed into paper.
• the amounts added are between 0.4 and 4.0% by weight of the solution or emulsion (based on paper raw material) with a respective polymer content (active ingredient content) of 10 to 20% by weight. If the requirements for wet strength are particularly high, even higher amounts are used. For example, in laminate papers with a high ash content and low basis weight, additional amounts of 6.0% by weight and more are required.
• 61.0 g 2 are added dropwise at 30 ° C. in 20 minutes to a template from 120 g of a 50% aqueous solution of a polyamide amine from DE-B 1 771 043, column 4, lines 4 to 25 and 350 ml of water , 3-epoxypropyl methanesulfonate and stirred for 30 minutes at 35 ° C.
• the mixture is then heated to 70 ° C. and 450 ml of water and 15.0 g of methyl bis (3-aminopropyl) amine are added as the viscosity increases. After the desired viscosity has been reached, the mixture is acidified to pH 2.8 using a sulfuric acid solution and the solids content is adjusted as desired. Solids content: 15.0% by weight Viscosity: 28 mPa.s (25 ° C) organ. Cl content: 0.001% by weight organ. S content: 1.5% by weight
• the mixture is then stirred at 30 ° C. for 30 minutes and then heated to 70 ° C.
• the mixture is acidified to pH 3.0 using a sulfuric acid solution and the solids content of the stable emulsion is adjusted as desired.
• Solids content 14.1% by weight
• Viscosity 465 mPas / 25 ° C organ.
• Cl content ⁇ 0.01% by weight
• Bleached pine sulphite pulp is ground in the Dutch at a consistency of 2.5% to a freeness of 38 ° Schopper-Riegler. 100 g of this are placed in a beaker and diluted to 1 l with water.
• test strips 1.5 cm wide are cut out of each sheet of paper and immersed in distilled water for 5 minutes.
• the wet strips are then clamped in a tensile testing machine and the wet breaking load is determined.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Paper (AREA)
• Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
• Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
• Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
• Polyamides (AREA)
• Epoxy Resins (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6350844

Family Applications (1)

Country Status (6)

Families Citing this family (11)

Family Cites Families (7)

• 1988
  • 1988-03-26 DE DE3810424A patent/DE3810424A1/de not_active Withdrawn
• 1989
  • 1989-03-11 EP EP89104344A patent/EP0335158B1/de not_active Expired - Lifetime
  • 1989-03-11 DE DE58907991T patent/DE58907991D1/de not_active Expired - Fee Related
  • 1989-03-11 AT AT89104344T patent/ATE108192T1/de active
  • 1989-03-14 US US07/323,457 patent/US5082527A/en not_active Expired - Fee Related
  • 1989-03-23 JP JP1069404A patent/JPH028219A/ja active Pending
  • 1989-03-23 FI FI891397A patent/FI891397A/fi not_active Application Discontinuation
• 1991
  • 1991-08-14 US US07/745,043 patent/US5093470A/en not_active Expired - Fee Related

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